Home / 10,980.30-16,466.40-5,431.80

Finding the Fourth Proportional to 10,980.30, 16,466.40 and 5,431.80

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Solution

The fourth proportional to 10,980.30, 16,466.40 and 5,431.80 is: 8,145.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,980.30 : 16,466.40 = 5,431.80 : x
  2. Step 2: Convert to fraction form
    10,980.30/16,466.40 = 5,431.80/x
  3. Step 3: Cross multiply
    10,980.30x = 16,466.40 × 5,431.80
  4. Step 4: Simplify right side
    10,980.30x = 89,442,191.52
  5. Step 5: Solve for x
    x = 89,442,191.52/10,980.30
  6. Step 6: Final answer
    x = 8,145.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.